1. US EIA. International energy statistics. Energy Information Administration, United States. Available from 〈http://www.eia.gov/cfapps/ipdbproject/IEDIndex3.cfm〉; 2013 [accessed 6 September 2013].
2. Methodology to assess EU biofuel policies: the CAPRI approach;Blanco,2013
3. IEA. Technology roadmap: biofuels for transport. Organisation for Economic Cooperation and Development, International Energy Agency; 2011.
4. von Malititz GP, Brent A. Assessing the biofuel options for Southern Africa. In: CSIR (Council for Scientific and Industrial Research), Science real and relevant: second CSIR biennial conference. Pretoria, South Africa, 17–18 November, 2008, Pretoria: CSIR; 2008.
5. High octane number ethanol-gasoline blends: quantifying the potential benefits in the United States;Anderson;Fuel,2012